var reportProcessor = new Telerik.Reporting.Processing.ReportProcessor();
    // set any deviceInfo settings if necessary
    var deviceInfo = new System.Collections.Hashtable();
    var reportSource = new Telerik.Reporting.UriReportSource();
    var directory = Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location);
    var value = Convert.ToInt32(numericExportarPdf.Value);
    reportSource.Uri = "Report.trdp";
    reportSource.Parameters.Add("NRO_TICKET", value);
    Telerik.Reporting.Processing.RenderingResult result = reportProcessor.RenderReport("PDF", reportSource, deviceInfo);
    if (result.HasErrors) return;
    string fileName = result.DocumentName + "." + result.Extension;
    string path = Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory);
    string filePath = Path.Combine(path, fileName);
    using FileStream fs = new FileStream(filePath, FileMode.Create);
    fs.Write(result.DocumentBytes, 0, result.DocumentBytes.Length);

Telerik.Reporting.Processing.CancelProcessingException: An error has occurred while processing the report. Processing canceled. Check the InnerException for more information.
 ---> System.Exception: Invalid value of report parameter 'NRO_TICKET'.
   --- End of inner exception stack trace ---
   at Telerik.Reporting.Processing.Report.ValidateParameters()
   at Telerik.Reporting.Processing.Report.ProcessItem()
   at Telerik.Reporting.Processing.ReportItemBase.ProcessElement()
   at Telerik.Reporting.Processing.Report.ProcessElement()
   at Telerik.Reporting.Processing.ProcessingElement.Process(IDataMember dataContext)
   at Telerik.Reporting.Processing.Report.Process(Boolean processItemActions, Boolean documentMapEnabled)
   at Telerik.Reporting.Processing.ReportProcessor.ProcessReport(Report report, IPathResolver pathResolver, IProcessingContext parentContext, IEnumerable`1 parameters, Key rootKey, Boolean interactivityEnabled, Boolean documentMapEnabled, PageLayoutInfo pageSettings, ErrorEventHandler errorHandler, List`1 documentNodes, Boolean& documentMapAvailable)
   at Telerik.Reporting.Processing.ReportProcessor.ProcessResolvedReports(ResolvedReportDocument resolvedReportDocument, IList`1 parameters, IProcessingContext contextPerDocument, Boolean interactivityEnabled, Boolean documentMapEnabled, PageLayoutInfo pageSettings, List`1 processedReports, ErrorEventHandler errorHandler, List`1 documentNodes, Boolean& documentMapAvailable, ListSlice& tocReportsSlice)
   at Telerik.Reporting.Processing.ReportProcessor.ProcessReportSource(ReportSource reportSource, IRenderingContext context)
   at Telerik.Reporting.Processing.ReportProcessor.ProcessReportSource(ReportSource reportSource, Hashtable deviceInfo, IRenderingContext context)
   at Telerik.Reporting.Processing.ReportProcessor.ProcessAndRender(String format, ReportSource reportSource, Hashtable deviceInfo, IRenderingContext renderingContext, CreateStream createStreamCallback)
   at Telerik.Reporting.Processing.ReportProcessor.ProcessAndRenderStateless(String format, ReportSource reportSource, Hashtable deviceInfo, IRenderingContext renderingContext, CreateStream createStreamCallback)
   at Telerik.Reporting.Processing.ReportProcessor.<>c__DisplayClass47_0.<RenderReport>b__0(SingleStreamManager sm)
   at Telerik.Reporting.Processing.ReportProcessor.RenderReportSafe(Func`2 renderCallback, String format, IRenderingContext renderingContext)
   at Telerik.Reporting.Processing.ReportProcessor.RenderReport(String format, ReportSource reportSource, Hashtable deviceInfo, CancellationToken cancellationToken)
   at Telerik.Reporting.Processing.ReportProcessor.RenderReport(String format, ReportSource reportSource, Hashtable deviceInfo)

public class BaseReportBook<TModel> : ReportBook, IDisposable
{
    public virtual byte[] CreatePdf(TModel model, ReportTypeEnum reportType)
    {
        var reportPackager = new ReportPackager();
        using var sourceStream = File.OpenRead(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Reports", reportType.GetDescription()));
        var report = (Telerik.Reporting.Report)reportPackager.UnpackageDocument(sourceStream);

        report.ItemDataBinding += new EventHandler((sender, e) => Report_ItemDataBinding(sender, e, model));
        InstanceReportSource reportSource = new InstanceReportSource();
        reportSource.ReportDocument = report;
        ReportSources.Add(reportSource);

        ReportProcessor reportProcessor = new ReportProcessor();
        var instanceReport = new InstanceReportSource();
        instanceReport.ReportDocument = this;
        RenderingResult result = reportProcessor.RenderReport("PDF", instanceReport, null);

        if (result.Errors.Length > 0)
            throw new Exception(string.Join("\r\nError: ", result.Errors.Select(s => s.Message)));
        return result.DocumentBytes;
    }

    private void Report_ItemDataBinding(object sender, EventArgs e, TModel model)
    {
        Telerik.Reporting.Processing.Report item = (Telerik.Reporting.Processing.Report)sender;
        item.DataSource = model;
    }

    protected override void Dispose(bool disposing)
    {
        base.Dispose(disposing);
        GC.SuppressFinalize(this);
        GC.Collect();
    }
}

public static class CustomFunctions
{
    [Function(Category = "Images", Namespace = "Extension", Description = "Images")]
    public static Image GetLogo() => new Bitmap(Properties.Resources.logo);
}